JP2012501001A - Directional circular reflector with equilateral triangular prism and disk-shaped light having the same - Google Patents

Abstract

Provided are a directional circular reflector having equidistant triangular microprisms and a disk-like light having the same. In the reflecting plate 1, a plurality of ring-shaped prismatic prism bodies 111 are provided on the prism surface 11, and in the vertical cross section passing through the central axis, the cross sections of the plurality of prism bodies 111 have the same shape and are cut off. The triangles have the same area and the same radial distance, the shortest distance from the apex of the triangle closest to the central axis to the smooth surface 12 of the reflector is the shortest distance from the smooth surface 12 to the periphery of the reflector Gradually increase. The disk-shaped light includes a reflecting plate 1, a heat radiating frame 3, a reflecting back sheet 5, a heat radiating plate 4, and a light body 2. The heat dissipating frame 3 is attached around the reflector 1 and is configured to form a light groove 14 for attaching the light body 2 by forming a gap with the cylindrical surface of the reflector 1.
[Selection] Figure 2a

Description

  The present invention relates to a micro prism type reflector, and more particularly to a circular reflector having a triangular prism with an equal cross section, and various disk-shaped lights and disk-shaped luminaires having the same.

  In the prior art, the reflective sheet or reflector is mainly used for reflecting and refracting light rays. After that, a strip-shaped micro-pillar prism that functions as a prism is provided on the reflective sheet or reflector, so that the solar The reflection and refraction of light could be better adjusted. Furthermore, by providing a light main body on both sides of the reflecting plate and manufacturing a light emitting plate, the lighting function can be achieved. In Patent Document 1, the present applicant has proposed a micro-prism type solar reflector and its adjustment control device, and among them, a strip-like right-angled isosceles triangular microprism prism body parallel to one surface of the reflector. Are provided, the apex angle is 90 degrees, the base angle is 45 degrees each, the blind holes are provided in the end faces on both sides of the reflector, and the light body including the LED diode is attached to the blind holes It is. Such a reflector is applied to a room provided with a glass ceiling, a window, or a skylight. While the sunlight is sufficiently incident in the winter, the whole or a part of the sunlight is reflected in the summer, thereby shielding the sunlight and ensuring the brightness of the room. Also, light bodies mounted on both sides can provide supplemental lighting in dark weather or at night. In the reflecting plate having such a structure, the entire reflecting plate can be formed as a light emitting surface by the function of the light body, but the illumination intensity of the illumination light is relatively low due to the limitation of the design structure.

  Based on the hint from Patent Document 1, the applicant examined how to apply the structure combining the reflector and the light-emitting diode LED to the lighting field, and changed the spot light source of the reflector to a surface light source using the LED. In other words, it is devised to change the function of LED from decoration to full-scale lighting. For this reason, the applicant presents two types of reflectors in Patent Document 2 and Patent Document 3. One type is a flat reflector, which is provided with a plurality of parallel strip-shaped microcolumnar prisms on one surface, and each microcolumnar prism has a cross section of unequal sides and a right triangle, adjacent to the plane of symmetry center. The right and left two right unequal triangular triangles have the largest cross-sectional area, and the cross-sectional area is configured to gradually decrease to the left and right ends. The other type is a circular plate, which is a circular reflector having microprisms whose center axis is a symmetric center and whose cross section is a right triangle, and a plurality of ring-shaped micropillar prisms are formed in the radial direction. The area structure is the same as a flat reflector. In the case of a circular reflector, the two types of reflectors are provided with blind holes at opposite ends or circumferential surfaces and attached to the light body. The central axis is configured to be parallel to the plane of the reflecting plate, or to pass the apex of the depression angle of each ring prism in the plane of the reflecting plate. If it does so, the light ray radiate | emitted by the light main body will be radiate | emitted from the inside of each micropillar prism body, and a favorable illumination effect can be implement | achieved.

  According to further research, flat reflectors and circular reflectors of the above-mentioned structure are used for directional illumination, reflecting light from a plane through a prism, nonuniformity of emitted light (which affects the illumination effect), and light with a reflector. There is a problem of miniaturization, that is, the design / arrangement of an asymmetric one-side micropillar prism. This is a problem that was not recognized in the above-mentioned Patent Document 1.

  Of course, LED light sources are included in the lighting field due to their structural characteristics, but LEDs have suffered major obstacles during development, particularly with regard to the application of high-power LEDs. The biggest problem is light attenuation. Also, LED indoor lighting applications will not work. In summary, we are not aware of the light characteristics of LED light sources, what kind of “instrument” is combined with “light” of LED, how optical and mechanical about “light” and “appliance” It is a problem to be solved by the present invention whether to design properly.

Chinese Patent No. 200510029375.1 Specification PCT / CN2007 / 002052 PCT / CN2008 / 000031

  The present invention is an optical technique suitable for LED characteristics, and is a directional circle having a triangular prism having the same cross section (equal) that makes the light from the LED reflected and emitted by one plane of the prism of the reflector very uniform. It is an object of the present invention to provide a reflector and a disk-shaped light or disk-shaped luminaire having the same.

  In order to avoid the complexity of lighting fixtures due to the complexity of the LED heat dissipation function and the decrease in lumen value due to the LED temperature rise due to a large current, the present invention is not a high-power LED, but a low-power, small-sized LED. Adopting current LED chip, accurately positioning the emission, conduction and reflection of all the light beams emitted to the chip, and quickly releasing the heat from the LED chip to realize the optimal effect of lighting equipment One purpose.

  In order to achieve the above object, the present invention employs a reflection means called a reflector having a triangular prism with an equal cross section. The reflector is the main body of the disk-shaped light. In such a reflector, a series of equilateral cross-section triangular prisms are developed from the center to the outside to form continuous equi-section triangular concentric prisms. The directional circular reflecting plate having triangular microprisms of equal cross section according to the present invention has a plurality of concentric ring-shaped microcolumnar prisms arranged radially from the central axis on one surface called a prism surface. The cross-section of each ring-shaped micropillar prism body in a vertical cross-section passing through is triangular and distributed continuously in a sawtooth shape, and each of the triangles has the same shape, the same cross-sectional area, and a cross-sectional triangle shape. The distance from the top to the other surface, called the smooth surface of the circular reflector, is the shortest in the ring-shaped microcolumnar prism closest to the central axis, and gradually increases toward the periphery of the reflectors on both the left and right sides. The connecting line in the radial direction of the apex of the triangular cross-section of the ring-shaped micro-column prism body becomes two inclined straight lines, intersects the central axis of the circular reflector at one point, and makes the smooth surface of the circular reflector and the depression angle α Formed, α Is less than 45 degrees, and each cross-sectional triangle is characterized by an equal distance or pitch in the radial direction.

  In the disk-like light, the cross-sectional triangle continuously distributed in the sawtooth shape, the right side or the left side of each triangle in the direction in which the distance from the vertex to the smooth plane gradually decreases is called the critical side, The extension line of the critical side intersects with a smooth plane opposite to the prism surface to form a normal line and a depression angle, and the depression angle range is between 40 degrees and 90 degrees.

  The disc-shaped light is characterized in that the depression angle α is less than 10 degrees.

  In the disk-like light, the cross-sectional triangle is a right triangle or a non-right triangle.

  In the disk-shaped light, the transparent plastic is polycarbonate.

  A disk-shaped light having a circular reflecting plate of the present invention comprises a reflecting plate, a heat dissipation frame, and a plurality of light bodies, and the heat dissipation frame has a ring surface having a central through hole and a ring shape positioned around the disk surface. The edge of the board surface with the central through hole formed is attached to the reflector so that it overlaps the edge of the smooth surface of the reflector, and the lower part of the inner peripheral wall of the board edge is reflected Abutting relative to the flange of the plate, and forming a gap between the other part of the inner peripheral wall and the cylindrical surface of the reflecting plate to form a concave groove type ring light groove coaxial with the central axis The light body is a light-emitting diode LED, a light bulb, an electrode tube or a plurality of pre-made light-emitting diode light units, each attached to a ring-shaped light groove, and an emission plane of the light-emitting diode Is the prism surface And definitive intersect the connecting line of the apex of each triangular cross section, characterized in that is arranged to form an included angle of 90-alpha.

  The disk-shaped light includes a heat radiating plate, the heat radiating plate is a circular plate, and a plurality of concentric ring-shaped heat radiating ribs having a uniform interval are provided on the upper surface perpendicular to the plate surface. The reflection plate is covered by coupling with the frame edge of the frame.

  In the disk-shaped light, each ring-shaped heat radiation rib of the heat radiating plate is provided with uniformly distributed chips, and these chips are aligned in the radial direction, and the heat radiating plate is formed of an aluminum alloy material. It is characterized by that.

  The disk-shaped light includes a reflective back sheet, and the reflective back sheet is substantially the same size as the reflective plate, and is formed of any material selected from plastic, paper, or metal material. It is characterized by being sandwiched between

  In the disk-shaped light, the light body is a ring-shaped light unit prepared in advance, and includes a plurality of light-emitting diode surface-mounted components, electrical resistances, and a wiring board, and the light unit includes: It is bent into an annular shape and installed or fitted in the light groove, and the emission plane of the light emitting diode in the light groove is brought into close contact with the cylindrical surface of the reflector of the light groove, and the apex of each sectional triangle of the reflector is connected. It is configured to intersect with the line at a depression angle of 90-α.

  The disk-shaped light is characterized in that a plurality of ring-shaped heat radiation ribs that are evenly spaced and project in the radial direction are provided on the edge of the heat radiation frame and the outer peripheral wall of the heat radiation ring.

  In the disk-like light, the side of each triangular section or the side facing light facing the irradiation direction of the light emitting diode of the triangular prism body is a light receiving critical side, which is a critical side facing the central axis of the sectional triangle, The ring-shaped surface where the light-receiving critical side of each cross-sectional triangle is located is the light-receiving critical surface, and the extension line of the critical side intersects the smooth plane of the prism surface to form a depression angle in the range of 40 to 90 degrees with the normal. It is configured as described above.

  In the disk-shaped light, the light emitting diode and the LED surface mount component are a low output, a small current diode and a chip, respectively, and a plurality of chips can be installed in one LED surface mount component.

  In the disk-shaped light, the heat dissipating frame and the heat dissipating plate are formed of an aluminum alloy material.

  The disk-shaped light is characterized in that a center mounting hole is provided in the center of the heat radiating plate, the reflective back sheet, and the reflective plate.

  The disk-shaped light includes a screw socket and a constant current source of a power supply driving device, the heat radiating plate has a conical shape, an upper portion of the cone is a flat surface, and a radial heat radiating rib is provided on the conical surface, The screw socket is attached to the plane of the top of the cone, and when the constant current source of the power supply driving device is attached to the space between the heat sink and the reflective backsheet, the input side is connected to the screw socket and the output side is It is configured to be connected to a wiring terminal of an LED light-emitting strip light.

  As described above, the disc-shaped light having the triangular prism of the equal cross section includes the constant current source of the power supply driving device, the LED light emitting strip light source, the aluminum heat dissipation frame (heat radiator) of the disc-shaped light, and the triangular prism of the equal cross section. Is a surface light source engine formed from a disc secondary optical element. The basic shape of a disk-shaped light is a disk, and when it is lit, a light beam is emitted from a circular plane, the drive voltage is DC 12 V or 24 V, and the current is a constant current source of several tens to several hundred milliamperes. Can be made into disc shaped lights of different diameters from mm to several hundred millimeters, between indoor lighting, living room flat ceiling ceiling lights, toilet ceiling lights, kitchen room ceiling lights, cupboard shelves It can be applied to disk light, public corridor and large space ceiling light. The disk light can also be applied to a desk lamp. The 1W disk light with a diameter of several tens of millimeters is suitable for night use by the elderly.

  The disk-shaped light is flat, compact, uniform light emission on the surface of the circular plane, no glare, the case temperature is usually about 10 ℃ higher than the ambient temperature, a safe low voltage of 12 volts, the total current Is less than 1000 mA, has a long life, and the life of the luminaire is 40,000 hours. Because of these features, it can be widely applied to indoor lighting.

  In the case of a disk-shaped light with a diameter of 4.6 W and a diameter of 190 mm, the illuminance when the distance is 400-500 mm is 900 Lux, and the illuminance when the distance is 1M is 195 Lux.

  Light rays are almost the same as incandescent lamps, good light color, no glare, uniform light color, no flicker, and long service life.

  The LED disk light is an energy-saving light that consumes one-tenth the power of a normal incandescent lamp, but can achieve the same illuminance as an incandescent lamp.

  The LED disk light is simple in structure, convenient to use, safe to transport, the material adopted is environmentally friendly and has reusable features, making it convenient for people's life, work and learning Provide and achieve the purpose of energy saving with high efficiency.

It is a three-dimensional view of a circular reflecting plate provided with triangular prisms of equal cross sections. It is a three-dimensional view of a disk-shaped light having a circular reflecting plate having triangular prisms of equal cross section. It is sectional drawing of the disk shaped light which has a triangular prism of equal cross section. It is the A section enlarged view of the disk shaped light which has a triangular prism of equal sections. It is a front view concerning the disk shaped light of the 1st example, and expresses the portion which removed the heat sink. FIG. 3B is a cross-sectional view taken along the line AA in FIG. 3A, showing an example of the design structure of the prism body on the prism surface of the disc-shaped light and the optical path analysis by irradiation of the light emitting diode. It is a front view concerning the disk shaped light of the 2nd example, and expresses the portion which removed the heat sink. FIG. 4B is a cross-sectional view taken along the line AA in FIG. 4a, showing another example of the design of the prism body on the prism surface of the disk-shaped light and the optical path analysis by irradiation of the light emitting diode. It is a front view which concerns on the disk shaped light of a 3rd example, and represents the part which removed the heat sink. FIG. 5B is a cross-sectional view taken along the line AA in FIG. 5a, showing another example of the design structure of the prism body on the prism surface of the disc-shaped light and the optical path analysis by irradiation of the light emitting diode. 3B shows the pitch in the radial direction of each triangular prism body on one side of the central axis of the disc-shaped light of FIG. 3b and the depression angle formed by the connecting line and the horizontal line at the apex of adjacent triangles. FIG. 6 is an enlarged view of part A in FIG. 6, showing that the critical light-receiving surface of the prism body is a hypotenuse of a right triangle and intersects the normal of the prism at 45 degrees. 4B shows the pitch in the radial direction of each triangular prism on one side of the central axis of the disc-shaped light of FIG. 4b and the depression angle formed by the connecting line and the horizontal line at the apex of adjacent triangles. FIG. 8B is an enlarged view of part B of FIG. 8, showing that the critical light-receiving surface of the prism body is a hypotenuse of a right triangle and intersects the normal of the prism at 45 degrees. 5b shows the pitch in the radial direction of each triangular prism on one side of the central axis of the disc-shaped light of FIG. 5b and the depression angle formed by the connecting line and the horizontal line at the apex of adjacent triangles. FIG. 10 is an enlarged view of part C in FIG. 10, showing that the critical light-receiving surface of the prism body is a hypotenuse of a right triangle and intersects the normal of the prism at 45 degrees. It is a contrast graph of the illumination intensity in the 0-1.5 meter distance range of the 4W disk shaped light which concerns on this invention, and a 60W incandescent lamp. It is a contrast graph of the illumination intensity in the distance range of 1.5-3 meters with the 4W disk shaped light which concerns on this invention, and a 60W incandescent lamp. It is a contrast graph of the illuminance in the 0-1.5 meter range of the 4W disk-shaped light which has a triangular prism of two different types of shapes and an equal cross section which concerns on this invention. It is a contrast graph of the illumination intensity in the 1.5-3 meter range of the 4W disk-shaped light which has a triangular prism of two different types of shapes and an equal cross section which concerns on this invention. It is the disk shaped lighting fixture which produced the disk shaped light concerning this invention in the ceiling light. It is sectional drawing of the disk shaped lighting fixture which has a screw socket. It is a top view of the disk-shaped lighting fixture which has a screw socket.

  Shown in FIGS. 1a to 2b is a circular reflector having triangular microprisms of equal cross section according to the first embodiment of the present invention. A plurality of concentric ring-shaped microcolumnar prism bodies 111 are provided from one surface called the prism surface 11 of the reflecting plate 1 from the center of symmetry OO ′. The cross section of each microprism prism body 111 is a triangle including a right triangle and a non-right triangle. The plurality of triangles are continuously distributed in a sawtooth shape, and the cross-sections are the same and equal, from the vertexes of two left and right triangles adjacent to the center of symmetry to the other surface called the smooth surface 12 of the reflector. The vertical distance is the shortest, and the vertical distance from the apex of the triangle to the other surface of the reflector gradually increases to the left and right sides (since the center plane or both sides of the center axis are symmetrical, the vertical distance is half of the left side. For example), the pitches of each triangle in the longitudinal direction are equal, each δ. Thus, the overall width of the triangular prism body is 2n × δ, where n is the number of concentric ring-shaped triangular prism bodies on one side of the symmetry center plane. Further, in the present invention, in the reflector, in addition to the two surfaces already set, the flat smooth surface 12 and the sawtooth triangular prism surface 11, the vertex of the triangle close to the smooth surface 12 is connected, and the smooth surface By connecting the vertices of adjacent triangles away from 12, two straight lines or two planes on which they are located are obtained, taking the left half of the central axis as an example. The two straight lines are inclined with respect to the smooth surface 12, but are parallel to each other. The two straight lines intersect the central axis OO ′ of the cross section of the reflector at points A and H, and are AN and HM, and form a depression angle α with the smooth surface 12 of the reflector, and α is 45 Less than degrees. In the present invention, the circular reflector is made of a transparent plastic such as polycarbonate.

  Also, due to design demands, this application introduces the concept of critical edges. That is, one of the right side and the left side of each triangle is called a critical side in the direction in which the distance from the apex of the triangle distributed in a sawtooth shape to the smooth plane sequentially decreases, and an extension line of the critical side Intersects a smooth plane opposite to the prism surface and forms a normal and a depression angle, and the depression angle range is 40 to 90 degrees.

  In the present invention, the reflection and refraction caused by the irradiation of the light emitting diode when a disk-shaped light is manufactured using the reflector having the triangular prisms having different equal cross sections, the heat radiating frame, and the light body will be described as follows. .

  The disc-shaped light of the present invention shown in FIGS. 1a and 1b includes a circular reflector 1, a plurality of light bodies 2, and a heat dissipation frame 3. In the reflector 1, an edge 113 extending further outward is left outside the ring-shaped microcolumnar prism body farthest from the central axis OO ′, and a part of the cylindrical surface 114 is formed on the outer peripheral surface of the edge 113. Remaining. A ring-shaped flange 115 is provided at a position adjacent to the smooth surface 12 below the cylindrical surface 114.

  As shown in FIG. 2a, the heat dissipating frame 3 includes a panel surface 31 having one central through hole and a ring-shaped panel edge 32 positioned around the panel surface. The heat dissipating frame 3 is mounted on the reflector so that the edge of the through hole in the board overlaps with the edge 113 on the smooth surface side of the reflector, and the reflector frame via the lower part of the inner peripheral wall of the board edge 32 Abutting relative to the flange 115, a gap is formed between the other part of the inner peripheral wall and the cylindrical surface 114 of the reflector, and a ring-shaped groove coaxial with the central axis OO ', that is, the light groove 14 Is formed. Further, the outer peripheral wall of the board edge portion 32 of the heat dissipating frame 3 is provided with a plurality of ring-shaped heat dissipating ribs 33 that are evenly spaced and project in the radial direction, and that the heat dissipating groove 27 is formed in the space between them. preferable. Further, in order to ensure a good heat dissipation effect, the heat dissipation frame 3 is formed of an aluminum alloy material.

  In a preferred embodiment, the heat dissipating frame 3 is an independent part made of aluminum alloy, and the heat dissipating rib 33 'is provided on the outer peripheral wall thereof. When the heat dissipating frame 3 is attached to the reflecting plate, the lower part of the inner peripheral wall is the flange of the reflecting plate. Abutting relative to 115, a gap is formed between the other part of the inner peripheral wall and the cylindrical surface 114 of the reflector, and a ring-shaped concave groove coaxial with the central axis OO ′ is formed. It is. The heat dissipation ring 32 'is also made of an aluminum alloy material.

  The light body 2 is a light-emitting diode LED, a light bulb, an electrode tube, or a plurality of light-emitting diode light units fabricated in advance, and is attached to each ring-shaped light groove 14. The light emitting diode is configured such that the exit plane intersects the connecting line at the apex of each cross-sectional triangle on the prism surface to form a 90-α depression angle.

  In the present embodiment, the light body 2 employs a light emitting diode unit fabricated in advance. The unit is a ring-shaped light unit composed of a plurality of light-emitting diode surface-mounted components 21, an electrical resistance, and a wiring board 22, and the plurality of light-emitting diode surface-mounted components 21 are evenly spaced from each other. The light unit is bent in an annular shape in accordance with the bending of the wiring board, and is installed or fitted in the light groove 14, and the emission plane of the light-emitting diode surface-mounted component 21 is placed on the light groove 14. A 90-α depression angle is formed in close contact with the cylindrical surface 114 of the reflecting plate and intersecting with the connecting line at the apex of each sectional triangle of the reflecting plate.

  A light beam emitted from the LED light emitting diode surface mounting component (collectively referred to as a light emitting diode) 21 attached to the light groove 14 is a light beam whose principal axis is parallel to the smooth surface 12 of the reflecting plate, and the central axis of the reflecting plate 1 When there are n triangular prism bodies of equal cross section on one side, the area of each LED light-emitting diode surface-mounted component 21 is area A, and the area A is divided into n equal to the number of prism bodies 111. If the total photon energy provided is E, sufficient photon energy of E / A / n is distributed to each equally divided area, and each prism body 111 of the prism surface 11 is irradiated with a uniform light beam. Can be secured. The LED light-emitting diode surface-mounted component used in the present invention is a low-power diode, and a plurality of chips can be installed on one LED light-emitting diode surface-mounted component. Such multi-chip LED light-emitting diode surface-mounted components are arranged in a matrix in a row and attached to the light groove 14 of the disk-shaped light.

Here, the optical structure characteristic of a triangular prism having an equal cross section is expressed by a mathematical expression. The depression angle α formed by the two straight lines AN and HM and the smooth surface can be obtained by performing parallel line transformation of the smooth surface at points A and M (depression angle α). Usually, the depression angle α is less than 10 degrees. The two parallel straight lines are AK and ME, as shown in FIG. In the case of the parallel line AK, the first section triangle FCA of the prism body on one side of the central axis is a right-angled unequal triangle, and the perpendicular made from the point F (the vertex of the adjacent triangle) to the parallel line is FB. The vertical line FB is one of the right-angle sides of the right-angle triangle, indicated by h ₁ , and creates a normal line from the vertices of the 2nd to n-th adjacent triangles to the parallel straight line AK in the same manner as described above. Right-angle sides h ₂ , h ₃ ...... h _n−1, h _n are obtained. Therefore, h ₁ , h ₂ , h ₃ ... H _n−1, h _n represent the vertical distances of the vertices of the _{1st to nth} triangles on one side from the symmetry central axis. BA is a part of the parallel straight line AK of one cross-sectional triangle, is another right side, and is equal to the pitch δ in the longitudinal direction of the cross-sectional triangle. Therefore, the vertical distance h ₁ from the vertex of the triangle adjacent to the first right triangle on one side of the central axis to the parallel straight line AK is obtained from the calculation formula tgα = FB / AB (ie, tgα = a / n × δ). Since FB = h ₁ and BA = δ, h ₁ = δ × tgα. Similarly, the vertical distances h ₂ , h ₃ ... H _n−1, h _n from the vertexes of the triangles adjacent to the 2nd to nth right triangles can be obtained. In the n-th triangle on one side of the central axis, tgα = h _n / n × δ, h _n is the vertical line from the apex of the n-th adjacent cross-sectional triangle to the parallel line AK, and H is the surface-mount component of the light emitting diode When designing a light-emitting diode surface-mount component, the light-receiving critical surface of each triangle passes through the vertical distance of the apex of the adjacent triangle as the principal axis path of the light beam emitted in the height direction In general, it is assumed that h _n = H is satisfied in order to ensure that it provides sufficient photon energy upon irradiation.

  The disk-shaped light shown in FIGS. 3a, 4a, and 5a is further provided with two wiring terminals 29. FIG. The reflector 1 is provided with one insertion port on the end face of the edge 13 located outside the light groove. The wiring terminals 29 are respectively attached to the insertion ports, and are electrically connected to the conductors of the strip-shaped light unit 2 via lead wires. Thereby, an external power supply can be connected at the wiring terminal 29. Actually, FIG. 3 to FIG. 5 are for explaining the equilateral sectional triangular design of the centrally symmetric form of various disk-like lights. First, in the disk-shaped light of the first example shown in FIGS. 3a and 3b, the triangle of the equal section is a 45 degree triangle, and the two rows of triangles located on the left and right sides of the central axis OO ′ are respectively outward. It has a vertical right-angled side (the side or surface from which the LED beam is incident on the prism) 15 and a hypotenuse each directed inward. These oblique sides are defined as a critical side (critical surface) or a light-receiving critical side (light-receiving critical surface) 16 because they face the light emitting diode irradiation direction (LED optical axis) or face the light. In the reflector having the triangular prisms of the same cross section, the normal line of each right triangular prism body intersects the extended line of the light receiving critical side at 45 degrees.

  In the second example of the disk-shaped light shown in FIGS. 4a and 4b, the equiangular triangle is a right-angled unequal triangle, and the two rows of right-angled triangles located on the left and right sides of the central axis OO ′ are respectively inside and outside. It has two right-hand sides 17 and 18 that face the direction. Of these, the side or surface from which LED rays are incident on the prism is defined as the incident right side 17 and the right side toward the inside is directed to the light emitting diode irradiation direction (LED optical axis). Therefore, it is defined as a critical side or a light-receiving critical side 18. In the reflector having the right-angle unequal side triangular prism having the same cross section, the normal F of each right-angled triangular prism body intersects the extension line of the light receiving critical side 18 at 45 degrees.

  In the third example disk-shaped light shown in FIGS. 5a and 5b, the equilateral triangles are non-right triangles, and the two rows of triangles located on the left and right sides of the center plane or center axis OO ′ are the inside and outside, respectively. Two triangular sides 19 and 24 having different lengths that face each other. These short sides facing outward are directed to the irradiation direction of the light emitting diode, and are defined as the critical side or the light receiving critical side 24. In the reflector having the triangular prisms of the same cross section, the normal F of each triangular prism body intersects the extended line of the light receiving critical side 24 at 45 degrees.

  Based on FIGS. 3 to 5, it can be seen how the disk-shaped light realizes directional illumination. In the reflector having the triangular prism of the equal cross section, the normal line of each triangular prism body intersects with the extension of the light-receiving critical side at 45 degrees, and the triangular prism body of the equal cross section is irradiated by the light emitting diode surface mounting component. It is a light ray c parallel to the normal F of the smooth surface 12 of the disk-shaped light that is generated from the disk-shaped light having

  A disk-shaped light made of a reflector having triangular prisms with various equal cross sections can form light rays emitted from a smooth surface at a constant angle and aggregate them to realize directional illumination. That is, light rays emitted from a reflector including a triangular prism with an equal cross section to which a light-emitting diode LED is attached form a normal depression angle with the normal of the prism plane, and directional illumination is configured by a set of these outgoing light rays. A disk-shaped light including a triangular prism having the same cross section as any one of FIGS. 3 to 6 can generate light rays that form a normal to a smooth surface and a directional depression angle. That is, the light-emitting diode surface-mounted component 21 or the multi-chip LED surface-mounted component can emit light to n triangular prisms having the same cross section by the spot light source method. Due to reflection and refraction by the light-receiving critical side and the smooth surface, strip-shaped outgoing light is formed. Strip light emitted from a plurality of light-emitting diode surface-mounted components is densely scattered over the entire plane according to the arrangement and grouping to form surface illumination light with high illuminance. This is the main mechanism by which the disc-shaped light according to the present invention replaces a normal incandescent lamp.

  The common point of the disk-shaped light having the triangular prisms of three equal cross sections shown in FIGS. 6 to 11 is that the light receiving critical surface or the extension lines 16, 18 and 24 of the critical side are all normal to the smooth surface 12 and 45. That is, an outgoing light that forms a depression angle of degrees and parallel to the normal of the smooth surface is generated. According to the analysis, the angle of depression between the extension of the light-receiving critical surface of the triangular prism with the same section adopted in the figure and the normal of the smooth surface of the prism is 45 degrees. This is a common characteristic of a disk-like light having three equilateral triangular prisms. As shown in FIGS. 3, 4 and 5, the light generated by these discoid lights is parallel to the normal of the smooth surface.

  FIG. 8 is a partially enlarged view of the prism body. In the triangular prism shown in FIG. 8, one vertical surface or side OM (15) is a right side from which an LED beam is incident on the prism, and each right angle. The pitch of the triangles in the longitudinal direction is δ1. In the right triangle prism shown in FIG. 10, the LED beam is incident on the prism from the right plane or side OM '(17), and the pitch of each right triangle in the longitudinal direction is δ2. In the triangular prism shown in FIG. 11, LED light is incident on the prism from a right-angle plane or side OM ″, and the pitch of each right-angle triangle in the longitudinal direction is δ3. It should be noted here that, in these prism bodies, the same area of the triangular prism having the same cross section, whether it is a right triangle or a non-right triangle, is secured in the reflector having the same width. The distance δ1 in the longitudinal direction of each triangle of the reflector shown in Fig. 11 is the shortest and smallest, and the distance δ3 in the longitudinal direction of each triangle of the reflector shown in Fig. 11 is the longest and largest. The distance Δ2 in the longitudinal direction of each right triangle of the reflector shown in FIG. 9 is between Δ1 and Δ3. As described above, the number of triangular prism rings provided on the reflecting plate shown in FIG. 7 is large, but the number of triangular prism rings provided on the reflecting plate shown in FIG. 11 is small. Similarly, in a reflector having the same width, the more triangular prism rings, the more light is emitted and the light becomes stronger. Conversely, the smaller the triangular prism ring, the less light is emitted and the light beam is weaker.

  As shown in FIGS. 3b, 4b, and 5b, the LED surface mount component 21 is accurately positioned in the light groove. The optical axis of the LED light-emitting diode surface mount component is parallel to the plane of the disk-shaped light. Parallel rays emitted by LED surface mount components irradiate the critical points of the triangular prisms arranged in sequence, and total reflection occurs, which is transmitted through the smooth surface of the prism, and directional illumination parallel to the plane normal is generated. It is formed.

  In the present invention, low-power, low-current LED surface mount components are employed. The LED PN junction generates heat when the operating current is 80%, so it is necessary to operate the PN junction at a low temperature to ensure long-time operation of the LED. It is necessary to quickly remove the heat. We adopt aluminum alloy with high thermal conductivity at the relative edge of the reflector light groove outward direction (this edge is also the edge frame of the lighting fixture) and heat dissipation of aluminum alloy with the heat dissipation groove 27 at the edge By providing the frame 3, good heat conduction performance is maintained.

  A disk-shaped light according to another embodiment of the present invention shown in FIGS. 1a, 2a and 16 includes a circular reflector 1, a plurality of light bodies 2, a heat dissipating frame 3, a heat dissipating plate 4 and / or A reflective backsheet 5 is provided. The heat radiating plate 4 is a circular plate such as a lid. The heat radiating plate 4 is provided with a plurality of concentric ring-shaped heat radiating ribs 41 having a uniform spacing on the upper surface thereof, and is connected via screws 6 by coupling the edge of the radiating plate to the edge of the heat radiating frame. It is preferable that the reflector is configured to cover the reflector. The ring-shaped heat radiating rib 41 of the heat radiating plate 4 conducts heat dissipated from the light body 2, and promotes air convection to dissipate heat from the center of the ring to the periphery. A heat dissipation tank is formed between them. In addition, in each ring-shaped heat radiation rib 41 of the heat radiating plate 4, some chips 411 that are uniformly distributed are opened. In order to ensure heat dissipation to the outside, it is preferable that these chips are arranged in an orderly manner and the heat sink is made of an aluminum alloy material. The reflective back sheet 5 has substantially the same dimensions as the reflector, is made of plastic, paper, or metal material, and is sandwiched between the reflector 1 and the heat sink 4.

  FIG. 12 and FIG. 13 are illuminance contrast graphs of a 4 W disc light and a 60 W incandescent lamp according to the present invention in different distance ranges, of which black dots and black connecting lines indicate Illuminance in a certain distance range of a 4W disc-shaped light. The illuminance in a certain distance range of a 60W incandescent lamp is indicated by a gray-black dot and a gray-black connecting line. The apex angle of the triangular prism body with an equal section of light is 45 degrees (the form shown in FIG. 3). According to the measurement results for the two, at a distance of 0.3 to 1.5 meters, the illuminance of the 4W disc light is about 1350Lux to 70Lux, and the illuminance of the 60W incandescent lamp at the same distance falls from 800Lux to 70Lux or less, from 1.5 At a distance of 3 meters, the illuminance of a 4W disc light is about 60Lux to 20Lux, and the illuminance of a 60W incandescent lamp is 30Lux to 10Lux. As described above, the directional disk-shaped light having the triangular prism having the same cross section to which the LED according to the present invention is attached can provide excellent illuminance, and the illuminance is 40 Lux even in a place 3 meters away from the disk-shaped light. Because it can be reached, it can be applied to the lighting field as a new lighting fixture and can replace incandescent lamps. In addition, it has advantages such as power saving, bright, less heat dissipation, reasonable structure, and convenience.

  FIG. 14 and FIG. 15 show the contrast of illuminance in a distance range of 0.3 to 1.5 meters and 1.5 to 3 meters of a 4 W disk-shaped light having triangular prisms of equal cross sections having two different shapes in the present invention. It is a graph. Among them, the black dots and the black connecting lines indicate the 4W disk-shaped light (form shown in Fig. 3) made of a reflector with an apex angle of a triangular prism body of equal cross section of 45 degrees. Illuminance in a certain distance range, indicated by a gray black dot and a gray black connecting line, is a 4W disk shape made of a reflector with a 90 ° vertex angle of a triangular prism body of equal cross section Illuminance over a certain distance range of the light (in the form shown in FIG. 4).

  With the same output, when comparing the illuminance of a disc-shaped light having a triangular prism with an equal section with an LED, when the prism body has an apex angle of 45 degrees and the prism body has an apex angle of 90 degrees, The following becomes clear. According to the graphs of Fig. 14 and Fig. 15, the disk-shaped light with the apex angle of 45 degrees has higher illuminance than the disk-shaped light with the apex angle of 90 degrees, especially from the illuminance graph in the range of 1.5 to 3 meters. In addition, for a disk-shaped light having a triangular prism of 4 W with an equal cross section, the illuminance is almost twice when the apex angle is 45 degrees than when the apex angle is 90 degrees. This is because a disk-shaped light having a triangular prism with a 4 W equi-section has exactly twice the number of critical faces when the apex angle is 45 degrees than when the apex angle is 90 degrees. In other words, it proved that the philosophy in the optical design concept related to the disk-shaped light of the present invention was correct.

  As can be seen from FIG. 16, the disk-shaped light according to the present invention is a disk for various uses by arranging a constant current source of a socket, a bracket, a decorative shade, and a power supply drive device like other bulbs or fluorescent lamps. Can be produced. Such a disk-shaped lighting fixture has a simple product structure and a directional lighting fixture having a diameter of 50 to 500 mm. Here, the Example of the disk-shaped lighting fixture concerning this invention has produced the ceiling light with the disk-shaped light. In this case, one center mounting hole is provided at the center of the heat radiating plate 4, the reflective back sheet 5, and the reflective plate 1. Before attaching the disk-shaped light to the suspended ceiling or flat ceiling, make a hole in the ceiling, fill the hole with a steel strip with screw holes as a support member, and then screw the screw into the mounting hole of the disk-shaped light A disk-shaped light can be installed on the ceiling by passing through and screwing into the screw hole of the steel strip. Then, by connecting to the constant current source of the external power supply driving device for turning on / off the power through the disk-shaped light wiring terminal 29, the surface-mounted component of the light-emitting diode of the disk-shaped light, that is, the LED light-emitting strip-shaped light Illuminated and emitted light can be passed through each prism body as described above to form illumination light on a smooth surface. In another embodiment, the disk-shaped light according to the present invention is an energy-saving light including a stopper or a screw (spiral) socket such as a disk-shaped light with a screw socket shown in FIG. The disk-shaped lighting fixture includes a reflecting plate 1, a plurality of light bodies 2, a heat radiating frame 3, a heat radiating plate 4 ', a reflective back sheet 5, a screw socket 7, and a constant current source 8 of a power supply driving device. have. As can be seen from FIGS. 17a and 17b, some of the basic components of the disk-shaped light are the same as in the previous embodiment, but only the heat sink 4 ′ is different from the heat sink 4 of FIG. The upper part of the cone is a flat surface, and radial radiating ribs 41 'are provided on the conical surface. The screw socket 7 is attached to a plane at the top of the cone. The heat radiating plate 4 'covers the reflecting plate 1 and the reflecting back sheet 5, and then connects the edge of the heat radiating plate 4' to the disk edge of the heat radiating frame 3 with screws (not shown). And the heat dissipating frame 3 are coupled to each other. At the same time, a conical space is formed between the heat radiating plate 4 'and the reflective back sheet 5, and the constant current source 8 of the power source drive device is attached via a bracket (not shown), the latter input side being a screw socket 7 and the output side is connected to a wiring terminal 29 (not shown) of the light body 2 of the LED light emitting strip light. Then, the disk-shaped light is directly turned on by screwing into the socket connected to the commercial power supply via the screw socket 7.

Claims (20)

A plurality of concentric ring-shaped microcolumnar prism bodies are provided on one surface called a prism surface in the radial direction from the central axis, and the cross-section of each ring-shaped microcolumnar prism body in a vertical section passing through the central axis is A directional circular reflector comprising triangular microprisms of equal cross-section that are triangular and distributed in a sawtooth shape continuously,
Each of the triangles has the same shape and the same cross-sectional area, and the distance from the vertex of the cross-sectional triangle to the other surface called the smooth surface of the circular reflector is larger in the ring-shaped microcolumnar prism body closest to the central axis. The shortest and gradually increasing toward the periphery of the left and right reflectors, the connecting line in the radial direction of the apex of the cross-sectional triangle of each ring-shaped micropillar prism body becomes two inclined straight lines, the central axis of the circular reflector At a point, forming a depression surface α with the smooth surface of the circular reflector, α being less than 45 degrees, and each cross-sectional triangle having the same radial distance or pitch Directional circular reflector with microprism. The cross-sectional triangles that are continuously distributed in a sawtooth shape, the right side or the left side of each triangle in the direction in which the distance from the vertex to the smooth plane gradually decreases is called a critical side, and the extension line of the critical side The disk-shaped light according to claim 1, characterized in that s intersects a smooth plane opposite to the prism surface to form a normal and a depression angle, and the depression angle range is between 40 degrees and 90 degrees.   The circular reflector according to claim 1, wherein the depression angle α is less than 10 degrees.   The outer edge of the ring-shaped micropillar prism body farthest from the central axis has an edge surrounded by a cylindrical surface, and the cylindrical surface is provided with a flange at a location adjacent to the smooth surface. The circular reflector according to claim 1.   The circular reflector according to claim 1, wherein the cross-sectional triangle is a right triangle or a non-right triangle.   The circular reflector according to claim 1, wherein the circular reflector is made of a transparent plastic.   The circular reflector according to claim 5, wherein the transparent plastic is polycarbonate. A disk-shaped light having a circular reflecting plate, comprising a reflecting plate, a heat dissipation frame, and a plurality of light bodies, the heat dissipation frame having a ring surface having a central through hole, and a ring shape positioned around the surface of the disk The board surface is mounted on the reflector so that the edge of the board surface in which the central through hole is formed overlaps the edge of the smooth surface of the reflector, and the lower part of the inner peripheral wall of the board edge is the reflector. A ring-shaped light groove of a concave groove type coaxial with the central axis is formed by forming a gap between the other part of the inner peripheral wall and the cylindrical surface of the reflecting plate. And
The light body is a light-emitting diode LED, a light bulb, an electrode tube or a plurality of pre-made light-emitting diode light units, each attached to a ring-shaped light groove, and an emission plane of the light-emitting diodes on each prism surface A disk-shaped light that is configured to form a depression angle of 90-α by intersecting with a connecting line at the apex of a triangular section.   A heat radiating plate, the heat radiating plate is a circular plate, and a plurality of concentric ring-shaped heat radiating ribs having a uniform interval are provided on the upper surface perpendicular to the plate surface; 8. The disk-shaped light according to claim 7, wherein the disk-shaped light is configured so as to cover the reflection plate by combining the two.   Each of the ring-shaped heat radiation ribs of the heat radiating plate is provided with uniformly distributed chips, the chips are aligned in the radial direction, and the heat radiating plate is formed of an aluminum alloy material. Item 10. The disk-shaped light described in item 9.   A reflective back sheet, the reflective back sheet being substantially the same size as the reflective plate, made of any material selected from plastic, paper or metal, and sandwiched between the reflective plate and the heat sink 8. The disk-shaped light according to claim 7, wherein   The light body is a ring-shaped light unit fabricated in advance, and has a plurality of light-emitting diode surface-mounted components, electrical resistances, and a wiring board, and the light unit is bent into an annular shape. The light emitting diode in the light groove is installed or fitted in the light groove, and the emitting plane of the light emitting diode in the light groove is brought into close contact with the cylindrical surface of the reflecting plate of the light groove. The disk-shaped light according to claim 7, wherein the disk-shaped light is configured to intersect at a depression angle.   The disk according to claim 7 or 8, wherein a plurality of ring-shaped heat-dissipating ribs having a uniform interval and projecting in the radial direction are provided on a peripheral edge of the heat-dissipating frame and an outer peripheral wall of the heat-dissipating ring. Light. The side of each triangular triangle or the side facing light that faces the irradiation direction of the light emitting diode of the triangular prism body is the critical side that receives light, and is the critical side that faces the central axis of the triangular triangle. The ring-shaped surface on which the side is located is the light-receiving critical surface, and the extension line of the critical side intersects with the smooth plane of the prism surface to form a depression angle in the range of 40 to 90 degrees with the normal line. The disk-shaped light according to claim 7.   The light beam emitted from the light emitting diode is a light beam whose principal axis is parallel to the smooth surface of the circular reflector and toward the central axis, and an equilateral triangular prism body is formed on one side of the central axis of the circular reflector. When there are n, the area of the light emitting plane of each light emitting diode LED is area A, the area A of the light emitting plane is divided into n equal to the number of prism bodies, and the total photon energy provided is E. For example, sufficient photon energy of E / A / n is distributed to each equally divided area, and the light emitted by the light emitting diodes is received along the radial direction along the center axis along the light receiving critical side of any cross-sectional triangle. The disk-shaped light according to any one of claims 7, 11, and 14, wherein the light-receiving critical surface of the triangular prism body is uniformly irradiated.   8. The LED according to claim 7, wherein the light emitting diode and the LED surface mount component are a low output, a small current diode and a chip, respectively, and a plurality of chips can be installed on one LED surface mount component. Disc light.   A wiring terminal is provided, and the circular reflector is provided with an insertion port at an edge located inside the light groove on one side, and the wiring terminal is attached to the insertion port. The disk-shaped light according to claim 7 or 12, wherein the disk-shaped light is configured to be electrically connected to a conducting wire of the light unit.   The disk-shaped light according to any one of claims 7 to 9, wherein the heat dissipating frame and the heat dissipating plate are formed of an aluminum alloy material.   The disk-shaped light according to any one of claims 7, 9, and 11, wherein a center mounting hole is provided in the center of the heat radiating plate, the reflective back sheet, and the reflective plate.   A screw socket and a constant current source of a power supply device, wherein the heat dissipation plate has a conical shape, an upper portion of the cone is a plane, a radial heat dissipation rib is provided on the conical surface, and the screw socket has an upper portion of the cone. When the constant current source of the power supply driving device is installed in the space between the heat sink and the reflective backsheet, the input side is connected to the screw socket, and the output side is an LED light emitting strip light. The disk-shaped light according to any one of claims 7, 9, and 11, which is connected to a wiring terminal.

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